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- Explain the cooling effect experienced when etha- nol is rubbed on your skin, given that 6.97 CH;OH(1) C,H;OH(g) AH° = 42.2 kJ/molProblem 4.7 Name the following substances, including the cis- or trans- prefix (red-brown 5 Br): (a) (b)a) b) C) HBr CH3CH₂OOCH₂CH3 1. Hg(OAc)2, H₂O 2. NaBH4 1) BH₂ / THF 2) H₂O2 NaOH (aq) cold
- Arrange the compounds in order of increasing solubility in water (least first). OH CH;CH,CH,CH CH;CH,CH,CH2 CH;CH,CH,CH; CH;CH,OCH,CH; II II IV O II, I, IV, III O II, IV, I, II O , I, IV, III O II, I, III, IVProvide the required information for the reaction scheme below: OH Compound B Compound C OH Compound A CHO CH2OH CHO CH2OH Compound E Compound D7:39 None of the following reactions take place as written. What is wrong with each? (a) Br CN NaCN CH3CH2CCH2CH3 CH3CH2CCH2CH3 CH3 CH3 (b) CH3 CH3 NaBr CH3CHCH2CH2CH2OH CH3CHCH,CH2CH2B (c) OH CH3 HBr CH3CH2CCH3 CH3CH=CCH3 CH3
- 3.35 Predict the position of equilibrium for the following reaction: + CH3OH + CH30H3C CH3 CH3 CH 3 excess Na2Cr2O7 H₂SO COOH A COOH COOH се -CH3 COOH CH3 C H3C B COOH11.42 Identify the lettered compounds in the following reaction scheme. он . D Дор [1] NaH (2) CH 1 [1] A [2] H20 OR (1) NaH [2] C OH OH OH B OH OTS
- 8:42 7 ull u 654 Problems Set – Alcohols and Phenols 1. Give IUPAC names for the following compounds: OH OH CHyCHCH,ČHPHCH, (a) (b) он (c) HO. CH;CH;CCH3 CHa ČH3 CHa CH (d) H. (e) H3C. (T) осна Br Br OH 2. Identify the alcohols in Problem 1 as primary, secondary, or tertiary. 3. Draw structures corresponding to the following IUPAC names: (a) 2-Methylhexan-2-ol (c) 2-Ethylbut-2-en-1-ol (e) o-Bromophenol (b) Нехаne-1,5-diol (d) Cyclohex-3-en-1-ol (f ) 2,4,6-Trinitrophenol 4. What carbonyl compounds give the following alcohols on reduction with LIAIH4? Show all possibilities. (b) он CHCH3Problem 4.7 Give the IUPAC name for each compound. H More Practice: Problem 4.8 C. asigu lang •YY Y d. b. Try Problems 4.34a; 4.38a, b, c, d, h, j. Give the IUPAC name for each compound. a. (CH3)3CCH₂CH(CH₂CH3)2 C. CH3(CH₂)3CH(CH₂CH₂CH3)CH(CH3)2 Cat ju så d. You must also know how to derive a structure from a given name. Sample Problem 4.2 illustrates a stepwise method.8.45 As we've seen, alkynes undergo many of the same addition reactions that alkenes do. What product might you expect from each of the fol- lowing reactions? 1 equiv Br2 CH3 (a) CH3CHCH2CH2C=CH 2 equiv H2, Pd/C (b) (c) 1 equiv HBr CH3 - CH3 (a) (b) CH3 CH3CHCH2CH2CH2CH3 ? H2/Pd ? HyPd (c) Br CH3 (d) ? HCI CH3CHCHCH2CH2CH2CH3 Br2 CH3CHCHCH2CHCH3 Br CH3 (e) он 1. Hg(OAc)2, H20 2. NaBH4 CH3CH2CH2CHCH3